The man suspected of killing two people at a Rhode Island home and then snatching a toddler has been captured in Massachusetts. However, authorities say 2-year-old Isaih Perez is still missing.

Malcolm Crowell was apprehended at about 12:30 p.m. on Sunday in Fall River after a nationwide Amber Alert was issued for Isiah, Massachusetts State Police spokesman Dave Procopio told WPRI-TV. Isiah hasn't yet been found, the spokesman said.

Police were called at 5:20 a.m. and found the two victims at a home in Johnston, a town of 30,000 residents less than 10 miles from Providence. Investigators believe that they were killed between 4:30 and 5 a.m. and that Crowell then fled the home with the child, Johnston Deputy Police Chief Daniel Parrillo told The Associated Press.

"We don't believe the child was harmed, and we're just hoping that he will be safely returned," Parrillo said before Crowell's capture.

Investigators were still working to determine the relationships among Crowell, the boy and the two homicide victims, Parrillo said. It is unclear whether Crowell was living in the home, was a guest or was uninvited, he said.

"Hopefully we can answer a lot more questions once we get Mr. Crowell here," Parrillo said. "We are starting to talk to family members right now to determine what the relationship with the boy is, but we have not pinpointed that. What he was doing there, we have no idea."

Police had said Crowell should be considered armed and dangerous.

Authorities were also trying to obtain a photograph of the child, Parrillo said.

"We don't have a picture; we don't have any identification; we don't have anything at this time," he said.